Accommodation levels in Rio de Janeiro are anticipated to be at full occupancy during the conference. While it is not the responsibility of the United Nations to procure accommodation for the media, it should be noted that the Brazilian national organizing committee for Rio+20 has committed to blocking a minimum of 500 hotel rooms in Rio de Janeiro for media covering the conference. Costs must be covered by the media. For more details, visit: http://www.rio20.gov.br For information regarding room availability please contact: Terramar Travel Agency

Cleaner and better-managed seas and coasts would help boost economic growth and reduce poverty and pollution, a United Nations Environment Programme (UNEP) report said on Wednesday.

The report, produced with several other U.N. organisations, highlights the huge potential of a marine-based economy some five months before world governments meet to discuss pathways to more sustainable development at a U.N. conference in Rio de Janeiro, Brazil.

Around 40 percent of the global population lives within 100 kilometres of a coast so the world's marine ecosystems provide essential food, shelter and jobs to millions of people.

But pollution from oil spills, fertilisers, waste, sewage and chemicals, as well as over-fishing, have damaged the health and productivity of the seas.

By using oceans to generate renewable energy and eco-tourism and shifting to more sustainable fisheries and transport, that trend could be reversed and islands in Asia and the Caribbean could reduce their vulnerability to climate change, UNEP said.

"Stepping up green investments in marine and coastal resources and enhancing international co-operation in managing these trans-boundary ecosystems are essential if a transition to low-carbon, resource efficient green economy is to be realized," said UNEP executive director Achim Steiner.

The report recommended key steps for "greening" the seas across areas such as tourism, fishing, transport, pollution, renewable energy and deep-sea mining.

CLEANING UP

Fertilisers such as nitrogen and phosphorous have helped to increase crop yields but their use has led to the degradation of marine ecosystems and groundwater.

The amount of nitrogen reaching the oceans has risen three-fold from pre-industrial levels and this could rise by almost another three times by 2050 if no action is taken.

Marine pollution costs $100 billion dollars in the European Union alone, the report said, but this could be reduced by stricter regulation of fertiliser use, removal and management and through subsidies to encourage nutrient recycling.

The world economy could also gain up to $50 billion a year by restoring fish stocks and reducing fishing capacity, according to the U.N. Food and Agriculture Organization and the World Bank.

Investments in fuel-efficient fishing methods and environmentally-friendly feeds for aquaculture systems would help reduce the fishing sector's carbon footprint.

Cleaner fuels and more energy-efficient ship designs could help cut emissions from the maritime industry which currently accounts for almost 5 percent of global C02 emissions.

This is expected to increase by 72 percent by the end of the decade as demand for seaborne goods hits all-time highs.